<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            background-color: rgb(225, 230, 230);
        }
        .ss{
            width: 414px;
            position: relative;
        }
        .ss img{
            width: 100%;
        }
        .ss::before{
            content: url(./今日新单_.png);
            position: absolute;
        }
        .ss::after{
            content: url(./今日新单2.png);
            position: absolute;
            bottom: 0em;
            right: 0;
        }
        .yi{
           width: 800px;
           position: relative;/*相对位置*/
        }
        /*.yi img{
            width: 100%;
        }*/
        .yi::before{
            position: absolute;/*绝对位置*/
            content: url(./今日新单_.png);
        }
        .yi::after{
            position: absolute;
            content:url(./今日新单2.png);
            bottom: 0;
            right: 0;
        }
        /*.xioaguo{
            background-image: url(./哈根达斯.jpg);
            width: 414px;
            height: 253px;
           border: 1px red none;
        }
        .bottom{
            position: relative;
            bottom: -12.42em;
            right: -18.1em;
        }
        <div class="xioaguo"><img class="top"  src="./今日新单_.png" alt="">
    <img class="bottom" src="./今日新单2.png" alt="">
</div>*/
    </style>
</head>
<body>
<div class="yuantu"><img src="./哈根达斯.jpg" alt=""><div>原图</div> </div>
<br>
<div class="ss">
    <img src="./哈根达斯.jpg" alt=""> </div>
<div>效果</div>
<div class="yi"><img src="./衣服.jpg" alt=""></div>
</body>
</html>